Talk:Pozzolanic ash

1. I believe that the statement from the text: "Most pozzolans, with the exception of fly ash, result in high early strength in concrete" is wrong. If I remember well pozzolanic concrete has lower early strength than simple Portland cement and higher strength much later. Someone please verify before correcting the entry.

Yes please change this. Kpeyn 23:13, 16 August 2006 (UTC)

2. To keep both entries pozzolanic ash and pozzolana separately, there would have to be some difference in the definition. I cannot see much difference but if anybody sees it, I suggest to make it evident. Alternatively, we should merge the two entries.

--FocalPoint 12:02, 21 October 2005 (UTC)

What does C-S-H mean? Carbon-Sulfur-Hydrogen? If it is Calcium-Silicon-Hydroxide, then it would be Ca-Si-OH. pstudier 01:07, 6 December 2005 (UTC)

C=CaO, S=Sio2, H=Hydrate. Check Portland cement. --FocalPoint 20:18, 6 December 2005 (UTC)

merging with pozzolana
I'm merging this article (redirecting to) Pozzolana, as that is the name of the natural volcanic ash with pozzolanic properties; I've also created an article on pozzolan, which covers natural and artificial (industrial by-product) pozzolans.

Also, see Cement chemist notation for more details about the C-S-H abbreviation. Argyriou 00:22, 29 September 2006 (UTC)